X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/63d72da75b054c270111d24285df0538417a85d5..7e7b77c1385cc93bdc7934c7c5e12bbe9e2528d3:/data/glr.c diff --git a/data/glr.c b/data/glr.c index d99fc70c..342e5b16 100644 --- a/data/glr.c +++ b/data/glr.c @@ -1,7 +1,7 @@ m4_divert(-1) -*- C -*- # GLR skeleton for Bison -# Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. +# Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by @@ -15,8 +15,8 @@ m4_divert(-1) -*- C -*- # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software -# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA -# 02111-1307 USA +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +# 02110-1301 USA ## ---------------- ## @@ -103,7 +103,7 @@ m4_define([b4_lpure_formals], # -------------------- # Expansion of $$. m4_define([b4_lhs_value], -[(*yyvalp)[]m4_ifval([$1], [.$1])]) +[((*yyvalp)[]m4_ifval([$1], [.$1]))]) # b4_rhs_value(RULE-LENGTH, NUM, [TYPE]) @@ -111,7 +111,7 @@ m4_define([b4_lhs_value], # Expansion of $NUM, where the current rule has RULE-LENGTH # symbols on RHS. m4_define([b4_rhs_value], -[((yyGLRStackItem const *)yyvsp)@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3])]) +[(((yyGLRStackItem const *)yyvsp)@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yysemantics.yysval[]m4_ifval([$3], [.$3]))]) @@ -131,26 +131,20 @@ m4_define([b4_lhs_location], # Expansion of @NUM, where the current rule has RULE-LENGTH symbols # on RHS. m4_define([b4_rhs_location], -[((yyGLRStackItem const *)yyvsp)@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yyloc]) +[(((yyGLRStackItem const *)yyvsp)@{YYFILL (m4_eval([$2 - $1]))@}.yystate.yyloc)]) # We do want M4 expansion after # for CPP macros. m4_changecom() m4_divert(0)dnl @output @output_parser_name@ -b4_copyright([Skeleton parser for GLR parsing with Bison], [2002, 2003, 2004]) +b4_copyright([Skeleton parser for GLR parsing with Bison], + [2002, 2003, 2004, 2005]) [ /* This is the parser code for GLR (Generalized LR) parser. */ -#include -#include -#include -#include -#include - ]b4_identification m4_if(b4_prefix[], [yy], [], -[/* If NAME_PREFIX is specified substitute the variables and functions - names. */ +[/* Substitute the variable and function names. */ #define yyparse b4_prefix[]parse #define yylex b4_prefix[]lex #define yyerror b4_prefix[]error @@ -178,6 +172,11 @@ b4_pre_prologue[ # define YYERROR_VERBOSE ]b4_error_verbose[ #endif +/* Enabling the token table. */ +#ifndef YYTOKEN_TABLE +# define YYTOKEN_TABLE ]b4_token_table[ +#endif + #if ! defined (YYSTYPE) && ! defined (YYSTYPE_IS_DECLARED) ]m4_ifdef([b4_stype], [b4_syncline([b4_stype_line], [b4_filename]) @@ -218,6 +217,24 @@ static YYSTYPE yyval_default; ]/* Line __line__ of glr.c. */ b4_syncline([@oline@], [@ofile@]) [ +#include +#include +#include +#include +#include + +#ifndef YY_ +# if YYENABLE_NLS +# if ENABLE_NLS +# include /* INFRINGES ON USER NAME SPACE */ +# define YY_(msgid) dgettext ("bison-runtime", msgid) +# endif +# endif +# ifndef YY_ +# define YY_(msgid) msgid +# endif +#endif + #ifndef YYFREE # define YYFREE free #endif @@ -228,6 +245,8 @@ b4_syncline([@oline@], [@ofile@]) # define YYREALLOC realloc #endif +#define YYSIZEMAX ((size_t) -1) + #ifdef __cplusplus typedef bool yybool; #else @@ -242,20 +261,23 @@ b4_syncline([@oline@], [@ofile@]) #ifndef __attribute__ /* This feature is available in gcc versions 2.5 and later. */ -# if !defined (__GNUC__) || __GNUC__ < 2 || \ -(__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__ +# if (!defined (__GNUC__) || __GNUC__ < 2 \ + || (__GNUC__ == 2 && __GNUC_MINOR__ < 5) || __STRICT_ANSI__) # define __attribute__(Spec) /* empty */ # endif #endif +]b4_location_if([#define YYOPTIONAL_LOC(Name) Name],[ +#ifdef __cplusplus +# define YYOPTIONAL_LOC(Name) /* empty */ +#else +# define YYOPTIONAL_LOC(Name) Name __attribute__ ((__unused__)) +#endif])[ + #ifndef YYASSERT # define YYASSERT(condition) ((void) ((condition) || (abort (), 0))) #endif -#ifndef ATTRIBUTE_UNUSED -# define ATTRIBUTE_UNUSED __attribute__ ((__unused__)) -#endif - /* YYFINAL -- State number of the termination state. */ #define YYFINAL ]b4_final_state_number[ /* YYLAST -- Last index in YYTABLE. */ @@ -310,8 +332,8 @@ static const ]b4_int_type_for([b4_rline])[ yyrline[] = }; #endif -#if (YYDEBUG) || YYERROR_VERBOSE -/* YYTNME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. +#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE +/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. First, the terminals, then, starting at YYNTOKENS, nonterminals. */ static const char *const yytname[] = { @@ -430,17 +452,17 @@ static const ]b4_int_type_for([b4_stos])[ yystos[] = do \ if (N) \ { \ - (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \ - (Current).first_column = YYRHSLOC(Rhs, 1).first_column; \ - (Current).last_line = YYRHSLOC(Rhs, N).last_line; \ - (Current).last_column = YYRHSLOC(Rhs, N).last_column; \ + (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \ + (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \ + (Current).last_line = YYRHSLOC (Rhs, N).last_line; \ + (Current).last_column = YYRHSLOC (Rhs, N).last_column; \ } \ else \ { \ (Current).first_line = (Current).last_line = \ - YYRHSLOC(Rhs, 0).last_line; \ + YYRHSLOC (Rhs, 0).last_line; \ (Current).first_column = (Current).last_column = \ - YYRHSLOC(Rhs, 0).last_column; \ + YYRHSLOC (Rhs, 0).last_column; \ } \ while (0) @@ -537,30 +559,99 @@ int yydebug; SIZE_MAX < YYMAXDEPTH * sizeof (GLRStackItem) evaluated with infinite-precision integer arithmetic. */ -#if YYMAXDEPTH == 0 -# undef YYMAXDEPTH -#endif - #ifndef YYMAXDEPTH # define YYMAXDEPTH ]b4_stack_depth_max[ #endif /* Minimum number of free items on the stack allowed after an allocation. This is to allow allocation and initialization - to be completed by functions that call expandGLRStack before the + to be completed by functions that call yyexpandGLRStack before the stack is expanded, thus insuring that all necessary pointers get properly redirected to new data. */ #define YYHEADROOM 2 -#if (! defined (YYSTACKEXPANDABLE) \ - && (! defined (__cplusplus) \ - || (]b4_location_if([[defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \ - && ]])[defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL))) -#define YYSTACKEXPANDABLE 1 -#else -#define YYSTACKEXPANDABLE 0 +#ifndef YYSTACKEXPANDABLE +# if (! defined (__cplusplus) \ + || (]b4_location_if([[defined (YYLTYPE_IS_TRIVIAL) && YYLTYPE_IS_TRIVIAL \ + && ]])[defined (YYSTYPE_IS_TRIVIAL) && YYSTYPE_IS_TRIVIAL)) +# define YYSTACKEXPANDABLE 1 +# else +# define YYSTACKEXPANDABLE 0 +# endif #endif +#if YYERROR_VERBOSE + +# ifndef yystpcpy +# if defined (__GLIBC__) && defined (_STRING_H) && defined (_GNU_SOURCE) +# define yystpcpy stpcpy +# else +/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in + YYDEST. */ +static char * +yystpcpy (char *yydest, const char *yysrc) +{ + char *yyd = yydest; + const char *yys = yysrc; + + while ((*yyd++ = *yys++) != '\0') + continue; + + return yyd - 1; +} +# endif +# endif + +# ifndef yytnamerr +/* Copy to YYRES the contents of YYSTR after stripping away unnecessary + quotes and backslashes, so that it's suitable for yyerror. The + heuristic is that double-quoting is unnecessary unless the string + contains an apostrophe, a comma, or backslash (other than + backslash-backslash). YYSTR is taken from yytname. If YYRES is + null, do not copy; instead, return the length of what the result + would have been. */ +static size_t +yytnamerr (char *yyres, const char *yystr) +{ + if (*yystr == '"') + { + size_t yyn = 0; + char const *yyp = yystr; + + for (;;) + switch (*++yyp) + { + case '\'': + case ',': + goto do_not_strip_quotes; + + case '\\': + if (*++yyp != '\\') + goto do_not_strip_quotes; + /* Fall through. */ + default: + if (yyres) + yyres[yyn] = *yyp; + yyn++; + break; + + case '"': + if (yyres) + yyres[yyn] = '\0'; + return yyn; + } + do_not_strip_quotes: ; + } + + if (! yyres) + return strlen (yystr); + + return yystpcpy (yyres, yystr) - yyres; +} +# endif + +#endif /* !YYERROR_VERBOSE */ + /** State numbers, as in LALR(1) machine */ typedef int yyStateNum; @@ -580,15 +671,26 @@ typedef struct yyGLRStack yyGLRStack; typedef struct yyGLRStateSet yyGLRStateSet; struct yyGLRState { + /** Type tag: always true. */ yybool yyisState; + /** Type tag for yysemantics. If true, yysval applies, otherwise + * yyfirstVal applies. */ yybool yyresolved; + /** Number of corresponding LALR(1) machine state. */ yyStateNum yylrState; + /** Preceding state in this stack */ yyGLRState* yypred; + /** Source position of the first token produced by my symbol */ size_t yyposn; union { + /** First in a chain of alternative reductions producing the + * non-terminal corresponding to this state, threaded through + * yynext. */ yySemanticOption* yyfirstVal; + /** Semantic value for this state. */ YYSTYPE yysval; } yysemantics; + /** Source location for this state. */ YYLTYPE yyloc; }; @@ -598,19 +700,25 @@ struct yyGLRStateSet { }; struct yySemanticOption { + /** Type tag: always false. */ yybool yyisState; + /** Rule number for this reduction */ yyRuleNum yyrule; + /** The last RHS state in the list of states to be reduced. */ yyGLRState* yystate; + /** Next sibling in chain of options. To facilitate merging, + * options are chained in decreasing order by address. */ yySemanticOption* yynext; }; +/** Type of the items in the GLR stack. The yyisState field + * indicates which item of the union is valid. */ union yyGLRStackItem { yyGLRState yystate; yySemanticOption yyoption; }; struct yyGLRStack { - int yyerrflag; int yyerrState; ]b4_location_if([[ /* To compute the location of the error token. */ yyGLRStackItem yyerror_range[3];]])[ @@ -623,34 +731,34 @@ struct yyGLRStack { jmp_buf yyexception_buffer; yyGLRStackItem* yyitems; yyGLRStackItem* yynextFree; - int yyspaceLeft; + size_t yyspaceLeft; yyGLRState* yysplitPoint; yyGLRState* yylastDeleted; yyGLRStateSet yytops; }; -static void yyinitGLRStack (yyGLRStack* yystack, size_t yysize); -static void yyexpandGLRStack (yyGLRStack* yystack]b4_pure_formals[); -static void yyfreeGLRStack (yyGLRStack* yystack); +static void yyexpandGLRStack (yyGLRStack* yystack); +static void yyFail (yyGLRStack* yystack]b4_pure_formals[, const char* yymsg) + __attribute__ ((__noreturn__)); static void -yyFail (yyGLRStack* yystack]b4_pure_formals[, const char* yyformat, ...) +yyFail (yyGLRStack* yystack]b4_pure_formals[, const char* yymsg) { - yystack->yyerrflag = 1; - if (yyformat != NULL) - { - char yymsg[256]; - va_list yyap; - va_start (yyap, yyformat); - vsprintf (yymsg, yyformat, yyap); - yyerror (]b4_yyerror_args[yymsg); - } + if (yymsg != NULL) + yyerror (]b4_yyerror_args[yymsg); longjmp (yystack->yyexception_buffer, 1); } +static void yyMemoryExhausted (yyGLRStack* yystack) + __attribute__ ((__noreturn__)); +static void +yyMemoryExhausted (yyGLRStack* yystack) +{ + longjmp (yystack->yyexception_buffer, 2); +} + #if YYDEBUG || YYERROR_VERBOSE -/** A printable representation of TOKEN. Valid until next call to - * tokenName. */ +/** A printable representation of TOKEN. */ static inline const char* yytokenName (yySymbol yytoken) { @@ -665,7 +773,7 @@ yytokenName (yySymbol yytoken) * at YYVSP[YYLOW0].yystate.yypred. Leaves YYVSP[YYLOW1].yystate.yypred * containing the pointer to the next state in the chain. Assumes * YYLOW1 < YYLOW0. */ -static void yyfillin (yyGLRStackItem *, int, int) ATTRIBUTE_UNUSED; +static void yyfillin (yyGLRStackItem *, int, int) __attribute__ ((__unused__)); static void yyfillin (yyGLRStackItem *yyvsp, int yylow0, int yylow1) { @@ -686,7 +794,7 @@ yyfillin (yyGLRStackItem *yyvsp, int yylow0, int yylow1) YYVSP[YYLOW1 .. *YYLOW-1] as in yyfillin and set *YYLOW = YYLOW1. For convenience, always return YYLOW1. */ static inline int yyfill (yyGLRStackItem *, int *, int, yybool) - ATTRIBUTE_UNUSED; + __attribute__ ((__unused__)); static inline int yyfill (yyGLRStackItem *yyvsp, int *yylow, int yylow1, yybool yynormal) { @@ -706,11 +814,12 @@ yyfill (yyGLRStackItem *yyvsp, int *yylow, int yylow1, yybool yynormal) static YYRESULTTAG yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp, YYSTYPE* yyvalp, - YYLTYPE* yylocp]b4_location_if(, [ ATTRIBUTE_UNUSED])[, + YYLTYPE* YYOPTIONAL_LOC (yylocp), yyGLRStack* yystack ]b4_user_formals[) { - yybool yynormal ATTRIBUTE_UNUSED = (yystack->yysplitPoint == NULL); + yybool yynormal __attribute__ ((__unused__)) = + (yystack->yysplitPoint == NULL); int yylow; # undef yyerrok @@ -729,7 +838,7 @@ yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp, # define YYFILL(N) yyfill (yyvsp, &yylow, N, yynormal) # undef YYBACKUP # define YYBACKUP(Token, Value) \ - return yyerror (]b4_yyerror_args["syntax error: cannot back up"), \ + return yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")), \ yyerrok, yyerr yylow = 1; @@ -738,10 +847,12 @@ yyuserAction (yyRuleNum yyn, int yyrhslen, yyGLRStackItem* yyvsp, else *yyvalp = yyvsp[YYFILL (1-yyrhslen)].yystate.yysemantics.yysval; YYLLOC_DEFAULT (*yylocp, yyvsp - yyrhslen, yyrhslen); -] +]b4_location_if([[ yystack->yyerror_range[1].yystate.yyloc = *yylocp; +]]) switch (yyn) { b4_actions + default: break; } return yyok; @@ -767,6 +878,7 @@ yyuserMerge (int yyn, YYSTYPE* yy0, YYSTYPE* yy1) switch (yyn) { b4_mergers + default: break; } } [ @@ -774,13 +886,44 @@ yyuserMerge (int yyn, YYSTYPE* yy0, YYSTYPE* yy1) ]b4_yydestruct_generate([b4_c_ansi_function_def])[ -/** Number of symbols composing the right hand side of rule #RULE. */ +/** Number of symbols composing the right hand side of rule #RULE. */ static inline int yyrhsLength (yyRuleNum yyrule) { return yyr2[yyrule]; } +static void +yydestroyGLRState (char const *yymsg, yyGLRState *yys) +{ + if (yys->yyresolved) + yydestruct (yymsg, yystos[yys->yylrState], + &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[); + else + { +#if YYDEBUG + if (yydebug) + { + YYFPRINTF (stderr, "%s unresolved ", yymsg); + yysymprint (stderr, yystos[yys->yylrState], + &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[); + YYFPRINTF (stderr, "\n"); + } +#endif + + if (yys->yysemantics.yyfirstVal) + { + yySemanticOption *yyoption = yys->yysemantics.yyfirstVal; + yyGLRState *yyrhs; + int yyn; + for (yyrhs = yyoption->yystate, yyn = yyrhsLength (yyoption->yyrule); + yyn > 0; + yyrhs = yyrhs->yypred, yyn -= 1) + yydestroyGLRState (yymsg, yyrhs); + } + } +} + /** Left-hand-side symbol for rule #RULE. */ static inline yySymbol yylhsNonterm (yyRuleNum yyrule) @@ -870,7 +1013,7 @@ yyisErrorAction (int yyaction) static void yyaddDeferredAction (yyGLRStack* yystack, yyGLRState* yystate, - yyGLRState* rhs, yyRuleNum yyrule]b4_pure_formals[) + yyGLRState* rhs, yyRuleNum yyrule) { yySemanticOption* yynewItem; yynewItem = &yystack->yynextFree->yyoption; @@ -882,19 +1025,22 @@ yyaddDeferredAction (yyGLRStack* yystack, yyGLRState* yystate, yynewItem->yynext = yystate->yysemantics.yyfirstVal; yystate->yysemantics.yyfirstVal = yynewItem; if (yystack->yyspaceLeft < YYHEADROOM) - yyexpandGLRStack (yystack]b4_pure_args[); + yyexpandGLRStack (yystack); } /* GLRStacks */ /** Initialize SET to a singleton set containing an empty stack. */ -static void +static yybool yyinitStateSet (yyGLRStateSet* yyset) { yyset->yysize = 1; yyset->yycapacity = 16; yyset->yystates = (yyGLRState**) YYMALLOC (16 * sizeof yyset->yystates[0]); + if (! yyset->yystates) + return yyfalse; yyset->yystates[0] = NULL; + return yytrue; } static void yyfreeStateSet (yyGLRStateSet* yyset) @@ -904,18 +1050,20 @@ static void yyfreeStateSet (yyGLRStateSet* yyset) /** Initialize STACK to a single empty stack, with total maximum * capacity for all stacks of SIZE. */ -static void +static yybool yyinitGLRStack (yyGLRStack* yystack, size_t yysize) { - yystack->yyerrflag = 0; yystack->yyerrState = 0; yynerrs = 0; yystack->yyspaceLeft = yysize; - yystack->yynextFree = yystack->yyitems = + yystack->yyitems = (yyGLRStackItem*) YYMALLOC (yysize * sizeof yystack->yynextFree[0]); + if (!yystack->yyitems) + return yyfalse; + yystack->yynextFree = yystack->yyitems; yystack->yysplitPoint = NULL; yystack->yylastDeleted = NULL; - yyinitStateSet (&yystack->yytops); + return yyinitStateSet (&yystack->yytops); } #define YYRELOC(YYFROMITEMS,YYTOITEMS,YYX,YYTYPE) \ @@ -927,21 +1075,23 @@ yyinitGLRStack (yyGLRStack* yystack, size_t yysize) allocation, so that we can avoid having external pointers exist across an allocation. */ static void -yyexpandGLRStack (yyGLRStack* yystack]b4_pure_formals[) +yyexpandGLRStack (yyGLRStack* yystack) { #if YYSTACKEXPANDABLE - yyGLRStack yynewStack; + yyGLRStackItem* yynewItems; yyGLRStackItem* yyp0, *yyp1; size_t yysize, yynewSize; size_t yyn; yysize = yystack->yynextFree - yystack->yyitems; if (YYMAXDEPTH <= yysize) - yyFail (yystack][]b4_pure_args[, "parser stack overflow"); + yyMemoryExhausted (yystack); yynewSize = 2*yysize; if (YYMAXDEPTH < yynewSize) yynewSize = YYMAXDEPTH; - yyinitGLRStack (&yynewStack, yynewSize); - for (yyp0 = yystack->yyitems, yyp1 = yynewStack.yyitems, yyn = yysize; + yynewItems = (yyGLRStackItem*) YYMALLOC (yynewSize * sizeof yynewItems[0]); + if (! yynewItems) + yyMemoryExhausted (yystack); + for (yyp0 = yystack->yyitems, yyp1 = yynewItems, yyn = yysize; 0 < yyn; yyn -= 1, yyp0 += 1, yyp1 += 1) { @@ -968,22 +1118,21 @@ yyexpandGLRStack (yyGLRStack* yystack]b4_pure_formals[) } } if (yystack->yysplitPoint != NULL) - yystack->yysplitPoint = YYRELOC (yystack->yyitems, yynewStack.yyitems, + yystack->yysplitPoint = YYRELOC (yystack->yyitems, yynewItems, yystack->yysplitPoint, yystate); for (yyn = 0; yyn < yystack->yytops.yysize; yyn += 1) if (yystack->yytops.yystates[yyn] != NULL) yystack->yytops.yystates[yyn] = - YYRELOC (yystack->yyitems, yynewStack.yyitems, + YYRELOC (yystack->yyitems, yynewItems, yystack->yytops.yystates[yyn], yystate); YYFREE (yystack->yyitems); - yystack->yyitems = yynewStack.yyitems; - yystack->yynextFree = yynewStack.yynextFree + yysize; - yystack->yyspaceLeft = yynewStack.yyspaceLeft - yysize; + yystack->yyitems = yynewItems; + yystack->yynextFree = yynewItems + yysize; + yystack->yyspaceLeft = yynewSize - yysize; #else - - yyFail (yystack][]b4_pure_args[, "parser stack overflow"); + yyMemoryExhausted (yystack); #endif } @@ -1006,7 +1155,7 @@ yyupdateSplit (yyGLRStack* yystack, yyGLRState* yys) /** Invalidate stack #K in STACK. */ static inline void -yymarkStackDeleted (yyGLRStack* yystack, int yyk) +yymarkStackDeleted (yyGLRStack* yystack, size_t yyk) { if (yystack->yytops.yystates[yyk] != NULL) yystack->yylastDeleted = yystack->yytops.yystates[yyk]; @@ -1059,8 +1208,9 @@ yyremoveDeletes (yyGLRStack* yystack) /** Shift to a new state on stack #K of STACK, corresponding to LR state * LRSTATE, at input position POSN, with (resolved) semantic value SVAL. */ static inline void -yyglrShift (yyGLRStack* yystack, int yyk, yyStateNum yylrState, size_t yyposn, - YYSTYPE yysval, YYLTYPE* yylocp]b4_user_formals[) +yyglrShift (yyGLRStack* yystack, size_t yyk, yyStateNum yylrState, + size_t yyposn, + YYSTYPE yysval, YYLTYPE* yylocp) { yyGLRStackItem* yynewItem; @@ -1076,15 +1226,15 @@ yyglrShift (yyGLRStack* yystack, int yyk, yyStateNum yylrState, size_t yyposn, yynewItem->yystate.yysemantics.yysval = yysval; yynewItem->yystate.yyloc = *yylocp; if (yystack->yyspaceLeft < YYHEADROOM) - yyexpandGLRStack (yystack]b4_pure_args[); + yyexpandGLRStack (yystack); } /** Shift stack #K of YYSTACK, to a new state corresponding to LR * state YYLRSTATE, at input position YYPOSN, with the (unresolved) * semantic value of YYRHS under the action for YYRULE. */ static inline void -yyglrShiftDefer (yyGLRStack* yystack, int yyk, yyStateNum yylrState, - size_t yyposn, yyGLRState* rhs, yyRuleNum yyrule]b4_pure_formals[) +yyglrShiftDefer (yyGLRStack* yystack, size_t yyk, yyStateNum yylrState, + size_t yyposn, yyGLRState* rhs, yyRuleNum yyrule) { yyGLRStackItem* yynewItem; @@ -1098,7 +1248,7 @@ yyglrShiftDefer (yyGLRStack* yystack, int yyk, yyStateNum yylrState, yystack->yytops.yystates[yyk] = &yynewItem->yystate; yystack->yynextFree += 1; yystack->yyspaceLeft -= 1; - yyaddDeferredAction (yystack, &yynewItem->yystate, rhs, yyrule]b4_pure_args[); + yyaddDeferredAction (yystack, &yynewItem->yystate, rhs, yyrule); } /** Pop the symbols consumed by reduction #RULE from the top of stack @@ -1108,7 +1258,7 @@ yyglrShiftDefer (yyGLRStack* yystack, int yyk, yyStateNum yylrState, * and *LOCP to the computed location (if any). Return value is as * for userAction. */ static inline YYRESULTTAG -yydoAction (yyGLRStack* yystack, int yyk, yyRuleNum yyrule, +yydoAction (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule, YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[) { int yynrhs = yyrhsLength (yyrule); @@ -1183,7 +1333,7 @@ yy_reduce_print (size_t yyk, yyRuleNum yyrule) */ static inline YYRESULTTAG yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule, - yybool yyforceEval]b4_pure_formals[) + yybool yyforceEval]b4_user_formals[) { size_t yyposn = yystack->yytops.yystates[yyk]->yyposn; @@ -1197,7 +1347,7 @@ yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule, yyglrShift (yystack, yyk, yyLRgotoState (yystack->yytops.yystates[yyk]->yylrState, yylhsNonterm (yyrule)), - yyposn, yysval, &yyloc]b4_user_args[); + yyposn, yysval, &yyloc); } else { @@ -1226,7 +1376,7 @@ yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule, { if (yyp->yylrState == yynewLRState && yyp->yypred == yys) { - yyaddDeferredAction (yystack, yyp, yys0, yyrule]b4_pure_args[); + yyaddDeferredAction (yystack, yyp, yys0, yyrule); yymarkStackDeleted (yystack, yyk); YYDPRINTF ((stderr, "Merging stack %lu into stack %lu.\n", (unsigned long int) yyk, @@ -1237,13 +1387,13 @@ yyglrReduce (yyGLRStack* yystack, size_t yyk, yyRuleNum yyrule, } } yystack->yytops.yystates[yyk] = yys; - yyglrShiftDefer (yystack, yyk, yynewLRState, yyposn, yys0, yyrule]b4_pure_args[); + yyglrShiftDefer (yystack, yyk, yynewLRState, yyposn, yys0, yyrule); } return yyok; } -static int -yysplitStack (yyGLRStack* yystack, int yyk) +static size_t +yysplitStack (yyGLRStack* yystack, size_t yyk) { if (yystack->yysplitPoint == NULL) { @@ -1252,11 +1402,15 @@ yysplitStack (yyGLRStack* yystack, int yyk) } if (yystack->yytops.yysize >= yystack->yytops.yycapacity) { - yystack->yytops.yycapacity *= 2; - yystack->yytops.yystates = - (yyGLRState**) YYREALLOC (yystack->yytops.yystates, - (yystack->yytops.yycapacity - * sizeof yystack->yytops.yystates[0])); + yyGLRState** yynewStates; + if (! ((yystack->yytops.yycapacity + <= (YYSIZEMAX / (2 * sizeof yynewStates[0]))) + && (yynewStates = + (yyGLRState**) YYREALLOC (yystack->yytops.yystates, + ((yystack->yytops.yycapacity *= 2) + * sizeof yynewStates[0]))))) + yyMemoryExhausted (yystack); + yystack->yytops.yystates = yynewStates; } yystack->yytops.yystates[yystack->yytops.yysize] = yystack->yytops.yystates[yyk]; @@ -1286,9 +1440,8 @@ yyidenticalOptions (yySemanticOption* yyy0, yySemanticOption* yyy1) return yyfalse; } -/** Assuming identicalOptions (Y0,Y1), (destructively) merge the - * alternative semantic values for the RHS-symbols of Y1 into the - * corresponding semantic value sets of the symbols of Y0. */ +/** Assuming identicalOptions (Y0,Y1), destructively merge the + * alternative semantic values for the RHS-symbols of Y1 and Y0. */ static void yymergeOptionSets (yySemanticOption* yyy0, yySemanticOption* yyy1) { @@ -1298,16 +1451,46 @@ yymergeOptionSets (yySemanticOption* yyy0, yySemanticOption* yyy1) yyn = yyrhsLength (yyy0->yyrule); yyn > 0; yys0 = yys0->yypred, yys1 = yys1->yypred, yyn -= 1) - if (yys0 == yys1) - break; - else if (! yys0->yyresolved && ! yys1->yyresolved) - { - yySemanticOption* yyz; - for (yyz = yys0->yysemantics.yyfirstVal; yyz->yynext != NULL; - yyz = yyz->yynext) - continue; - yyz->yynext = yys1->yysemantics.yyfirstVal; - } + { + if (yys0 == yys1) + break; + else if (yys0->yyresolved) + { + yys1->yyresolved = yytrue; + yys1->yysemantics.yysval = yys0->yysemantics.yysval; + } + else if (yys1->yyresolved) + { + yys0->yyresolved = yytrue; + yys0->yysemantics.yysval = yys1->yysemantics.yysval; + } + else + { + yySemanticOption** yyz0p; + yySemanticOption* yyz1; + yyz0p = &yys0->yysemantics.yyfirstVal; + yyz1 = yys1->yysemantics.yyfirstVal; + while (yytrue) + { + if (yyz1 == *yyz0p || yyz1 == NULL) + break; + else if (*yyz0p == NULL) + { + *yyz0p = yyz1; + break; + } + else if (*yyz0p < yyz1) + { + yySemanticOption* yyz = *yyz0p; + *yyz0p = yyz1; + yyz1 = yyz1->yynext; + (*yyz0p)->yynext = yyz; + } + yyz0p = &(*yyz0p)->yynext; + } + yys1->yysemantics.yyfirstVal = yys0->yysemantics.yyfirstVal; + } + } } /** Y0 and Y1 represent two possible actions to take in a given @@ -1425,6 +1608,9 @@ yyreportTree (yySemanticOption* yyx, int yyindent) } #endif +static void yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1, + yyGLRStack* yystack]b4_pure_formals[) + __attribute__ ((__noreturn__)); static void yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1, yyGLRStack* yystack]b4_pure_formals[) @@ -1441,7 +1627,7 @@ yyreportAmbiguity (yySemanticOption* yyx0, yySemanticOption* yyx1, yyreportTree (yyx1, 2); YYFPRINTF (stderr, "\n"); #endif - yyFail (yystack][]b4_pure_args[, "ambiguity detected"); + yyFail (yystack][]b4_pure_args[, YY_("syntax is ambiguous")); } @@ -1452,35 +1638,44 @@ yyresolveValue (yySemanticOption* yyoptionList, yyGLRStack* yystack, YYSTYPE* yyvalp, YYLTYPE* yylocp]b4_user_formals[) { yySemanticOption* yybest; - yySemanticOption* yyp; - int yymerge; + yySemanticOption** yypp; + yybool yymerge; yybest = yyoptionList; - yymerge = 0; - for (yyp = yyoptionList->yynext; yyp != NULL; yyp = yyp->yynext) + yymerge = yyfalse; + for (yypp = &yyoptionList->yynext; *yypp != NULL; ) { + yySemanticOption* yyp = *yypp; + if (yyidenticalOptions (yybest, yyp)) - yymergeOptionSets (yybest, yyp); + { + yymergeOptionSets (yybest, yyp); + *yypp = yyp->yynext; + } else - switch (yypreference (yybest, yyp)) - { - case 0: - yyreportAmbiguity (yybest, yyp, yystack]b4_pure_args[); - break; - case 1: - yymerge = 1; - break; - case 2: - break; - case 3: - yybest = yyp; - yymerge = 0; - break; - } + { + switch (yypreference (yybest, yyp)) + { + case 0: + yyreportAmbiguity (yybest, yyp, yystack]b4_pure_args[); + break; + case 1: + yymerge = yytrue; + break; + case 2: + break; + case 3: + yybest = yyp; + yymerge = yyfalse; + break; + } + yypp = &yyp->yynext; + } } if (yymerge) { + yySemanticOption* yyp; int yyprec = yydprec[yybest->yyrule]; YYCHK (yyresolveAction (yybest, yystack, yyvalp, yylocp]b4_user_args[)); for (yyp = yybest->yynext; yyp != NULL; yyp = yyp->yynext) @@ -1548,9 +1743,9 @@ yycompressStack (yyGLRStack* yystack) } static YYRESULTTAG -yyprocessOneStack (yyGLRStack* yystack, int yyk, +yyprocessOneStack (yyGLRStack* yystack, size_t yyk, size_t yyposn, YYSTYPE* yylvalp, YYLTYPE* yyllocp - ]b4_user_formals[) + ]b4_pure_formals[) { int yyaction; const short int* yyconflicts; @@ -1560,7 +1755,8 @@ yyprocessOneStack (yyGLRStack* yystack, int yyk, while (yystack->yytops.yystates[yyk] != NULL) { yyStateNum yystate = yystack->yytops.yystates[yyk]->yylrState; - YYDPRINTF ((stderr, "Stack %d Entering state %d\n", yyk, yystate)); + YYDPRINTF ((stderr, "Stack %lu Entering state %d\n", + (unsigned long int) yyk, yystate)); YYASSERT (yystate != YYFINAL); @@ -1569,11 +1765,12 @@ yyprocessOneStack (yyGLRStack* yystack, int yyk, yyrule = yydefaultAction (yystate); if (yyrule == 0) { - YYDPRINTF ((stderr, "Stack %d dies.\n", yyk)); + YYDPRINTF ((stderr, "Stack %lu dies.\n", + (unsigned long int) yyk)); yymarkStackDeleted (yystack, yyk); return yyok; } - YYCHK (yyglrReduce (yystack, yyk, yyrule, yyfalse]b4_lpure_args[)); + YYCHK (yyglrReduce (yystack, yyk, yyrule, yyfalse]b4_user_args[)); } else { @@ -1588,34 +1785,37 @@ yyprocessOneStack (yyGLRStack* yystack, int yyk, while (*yyconflicts != 0) { - int yynewStack = yysplitStack (yystack, yyk); - YYDPRINTF ((stderr, "Splitting off stack %d from %d.\n", - yynewStack, yyk)); + size_t yynewStack = yysplitStack (yystack, yyk); + YYDPRINTF ((stderr, "Splitting off stack %lu from %lu.\n", + (unsigned long int) yynewStack, + (unsigned long int) yyk)); YYCHK (yyglrReduce (yystack, yynewStack, - *yyconflicts, yyfalse]b4_lpure_args[)); + *yyconflicts, yyfalse]b4_user_args[)); YYCHK (yyprocessOneStack (yystack, yynewStack, yyposn, - yylvalp, yyllocp]b4_user_args[)); + yylvalp, yyllocp]b4_pure_args[)); yyconflicts += 1; } if (yyisShiftAction (yyaction)) { - YYDPRINTF ((stderr, "On stack %d, ", yyk)); + YYDPRINTF ((stderr, "On stack %lu, ", (unsigned long int) yyk)); YY_SYMBOL_PRINT ("shifting", *yytokenp, yylvalp, yyllocp); yyglrShift (yystack, yyk, yyaction, yyposn+1, - *yylvalp, yyllocp]b4_user_args[); - YYDPRINTF ((stderr, ", now in state #%d\n", + *yylvalp, yyllocp); + YYDPRINTF ((stderr, "Stack %lu now in state #%d\n", + (unsigned long int) yyk, yystack->yytops.yystates[yyk]->yylrState)); break; } else if (yyisErrorAction (yyaction)) { - YYDPRINTF ((stderr, "Stack %d dies.\n", yyk)); + YYDPRINTF ((stderr, "Stack %lu dies.\n", + (unsigned long int) yyk)); yymarkStackDeleted (yystack, yyk); break; } else - YYCHK (yyglrReduce (yystack, yyk, -yyaction, yyfalse]b4_lpure_args[)); + YYCHK (yyglrReduce (yystack, yyk, -yyaction, yyfalse]b4_user_args[)); } } return yyok; @@ -1637,10 +1837,24 @@ yyreportSyntaxError (yyGLRStack* yystack, yyn = yypact[yystack->yytops.yystates[0]->yylrState]; if (YYPACT_NINF < yyn && yyn < YYLAST) { - size_t yysize = 0; - const char* yyprefix; - char* yymsg; + size_t yysize0 = yytnamerr (NULL, yytokenName (*yytokenp)); + size_t yysize = yysize0; + size_t yysize1; + yybool yysize_overflow = yyfalse; + char* yymsg = NULL; + enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; + char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM]; int yyx; + char *yyfmt; + char const *yyf; + static char const yyunexpected[] = "syntax error, unexpected %s"; + static char const yyexpecting[] = ", expecting %s"; + static char const yyor[] = " or %s"; + char yyformat[sizeof yyunexpected + + sizeof yyexpecting - 1 + + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2) + * (sizeof yyor - 1))]; + char const *yyprefix = yyexpecting; /* Start YYX at -YYN if negative to avoid negative indexes in YYCHECK. */ @@ -1649,51 +1863,66 @@ yyreportSyntaxError (yyGLRStack* yystack, /* Stay within bounds of both yycheck and yytname. */ int yychecklim = YYLAST - yyn; int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS; - int yycount = 0; + int yycount = 1; + + yyarg[0] = yytokenName (*yytokenp); + yyfmt = yystpcpy (yyformat, yyunexpected); - yyprefix = ", expecting "; for (yyx = yyxbegin; yyx < yyxend; ++yyx) if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) { - yysize += strlen (yyprefix) + strlen (yytokenName (yyx)); - yycount += 1; - if (yycount == 5) + if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) { - yysize = 0; + yycount = 1; + yysize = yysize0; + yyformat[sizeof yyunexpected - 1] = '\0'; break; } - yyprefix = " or "; + yyarg[yycount++] = yytokenName (yyx); + yysize1 = yysize + yytnamerr (NULL, yytokenName (yyx)); + yysize_overflow |= yysize1 < yysize; + yysize = yysize1; + yyfmt = yystpcpy (yyfmt, yyprefix); + yyprefix = yyor; } - yysize += (sizeof ("syntax error, unexpected ") - + strlen (yytokenName (*yytokenp))); - yymsg = (char*) YYMALLOC (yysize); - if (yymsg != 0) + + yyf = YY_(yyformat); + yysize1 = yysize + strlen (yyf); + yysize_overflow |= yysize1 < yysize; + yysize = yysize1; + + if (!yysize_overflow) + yymsg = (char *) YYMALLOC (yysize); + + if (yymsg) { - char* yyp = yymsg; - sprintf (yyp, "syntax error%s%s", - (*yytokenp == YYEMPTY ? "" : ", unexpected "), - yytokenName (*yytokenp)); - yyp += strlen (yyp); - if (yycount < 5) + char *yyp = yymsg; + int yyi = 0; + while ((*yyp = *yyf)) { - yyprefix = ", expecting "; - for (yyx = yyxbegin; yyx < yyxend; ++yyx) - if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) - { - sprintf (yyp, "%s%s", yyprefix, yytokenName (yyx)); - yyp += strlen (yyp); - yyprefix = " or "; - } + if (*yyp == '%' && yyf[1] == 's' && yyi < yycount) + { + yyp += yytnamerr (yyp, yyarg[yyi++]); + yyf += 2; + } + else + { + yyp++; + yyf++; + } } yyerror (]b4_lyyerror_args[yymsg); YYFREE (yymsg); } else - yyerror (]b4_lyyerror_args["syntax error; also virtual memory exhausted"); + { + yyerror (]b4_lyyerror_args[YY_("syntax error")); + yyMemoryExhausted (yystack); + } } else #endif /* YYERROR_VERBOSE */ - yyerror (]b4_lyyerror_args["syntax error"); + yyerror (]b4_lyyerror_args[YY_("syntax error")); yynerrs += 1; } } @@ -1704,7 +1933,7 @@ yyreportSyntaxError (yyGLRStack* yystack, static void yyrecoverSyntaxError (yyGLRStack* yystack, YYSTYPE* yylvalp, - YYLTYPE* yyllocp]b4_location_if(, [ ATTRIBUTE_UNUSED])[ + YYLTYPE* YYOPTIONAL_LOC (yyllocp) ]b4_user_formals[) { yySymbol* const yytokenp = yystack->yytokenp; @@ -1717,21 +1946,7 @@ yyrecoverSyntaxError (yyGLRStack* yystack, while (yytrue) { if (*yytokenp == YYEOF) - { - /* Now pop stack until empty and fail. */ - while (yystack->yytops.yystates[0] != NULL) - { - yyGLRState *yys = yystack->yytops.yystates[0]; -]b4_location_if([[ yystack->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[ - yydestruct ("Error: popping", - yystos[yys->yylrState], - &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[); - yystack->yytops.yystates[0] = yys->yypred; - yystack->yynextFree -= 1; - yystack->yyspaceLeft += 1; - } - yyFail (yystack][]b4_lpure_args[, NULL); - } + yyFail (yystack][]b4_lpure_args[, NULL); if (*yytokenp != YYEMPTY) {]b4_location_if([[ /* We throw away the lookahead, but the error range @@ -1791,15 +2006,13 @@ yyrecoverSyntaxError (yyGLRStack* yystack, YY_SYMBOL_PRINT ("Shifting", yystos[yytable[yyj]], yylvalp, &yyerrloc); yyglrShift (yystack, 0, yytable[yyj], - yys->yyposn, *yylvalp, &yyerrloc]b4_user_args[); + yys->yyposn, *yylvalp, &yyerrloc); yys = yystack->yytops.yystates[0]; break; } } ]b4_location_if([[ yystack->yyerror_range[1].yystate.yyloc = yys->yyloc;]])[ - yydestruct ("Error: popping", - yystos[yys->yylrState], - &yys->yysemantics.yysval]b4_location_if([, &yys->yyloc])[); + yydestroyGLRState ("Error: popping", yys); yystack->yytops.yystates[0] = yys->yypred; yystack->yynextFree -= 1; yystack->yyspaceLeft += 1; @@ -1814,11 +2027,9 @@ yyrecoverSyntaxError (yyGLRStack* yystack, default: \ break; \ case yyabort: \ - yystack.yyerrflag = 1; \ - goto yyDone; \ + goto yyabortlab; \ case yyaccept: \ - yystack.yyerrflag = 0; \ - goto yyDone; \ + goto yyacceptlab; \ case yyerr: \ goto yyuser_error; \ } \ @@ -1831,6 +2042,7 @@ yyrecoverSyntaxError (yyGLRStack* yystack, ]b4_c_ansi_function_def([yyparse], [int], b4_parse_param)[ { + int yyresult; yySymbol yytoken; yyGLRStack yystack; size_t yyposn; @@ -1845,14 +2057,9 @@ yyrecoverSyntaxError (yyGLRStack* yystack, YYSTYPE* const yylvalp = &yylval; YYLTYPE* const yyllocp = &yylloc; - yyinitGLRStack (&yystack, YYINITDEPTH); - yystack.yytokenp = &yytoken; - YYDPRINTF ((stderr, "Starting parse\n")); - if (setjmp (yystack.yyexception_buffer) != 0) - goto yyDone; - + yytoken = YYEMPTY; yylval = yyval_default; ]b4_location_if([ #if YYLTYPE_IS_TRIVIAL @@ -1861,8 +2068,8 @@ yyrecoverSyntaxError (yyGLRStack* yystack, #endif ]) m4_ifdef([b4_initial_action], [ -m4_pushdef([b4_at_dollar], [yylval])dnl -m4_pushdef([b4_dollar_dollar], [yylloc])dnl +m4_pushdef([b4_at_dollar], [yylloc])dnl +m4_pushdef([b4_dollar_dollar], [yylval])dnl /* User initialization code. */ b4_initial_action m4_popdef([b4_dollar_dollar])dnl @@ -1870,8 +2077,15 @@ m4_popdef([b4_at_dollar])dnl /* Line __line__ of glr.c. */ b4_syncline([@oline@], [@ofile@])])dnl [ - yyglrShift (&yystack, 0, 0, 0, yylval, &yylloc]b4_user_args[); - yytoken = YYEMPTY; + if (! yyinitGLRStack (&yystack, YYINITDEPTH)) + goto yyexhaustedlab; + switch (setjmp (yystack.yyexception_buffer)) + { + case 1: goto yyabortlab; + case 2: goto yyexhaustedlab; + } + yystack.yytokenp = &yytoken; + yyglrShift (&yystack, 0, 0, 0, yylval, &yylloc); yyposn = 0; while (yytrue) @@ -1889,7 +2103,7 @@ b4_syncline([@oline@], [@ofile@])])dnl yyStateNum yystate = yystack.yytops.yystates[0]->yylrState; YYDPRINTF ((stderr, "Entering state %d\n", yystate)); if (yystate == YYFINAL) - goto yyDone; + goto yyacceptlab; if (yyisDefaultedState (yystate)) { yyrule = yydefaultAction (yystate); @@ -1899,7 +2113,7 @@ b4_syncline([@oline@], [@ofile@])])dnl yyreportSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[); goto yyuser_error; } - YYCHK1 (yyglrReduce (&yystack, 0, yyrule, yytrue]b4_lpure_args[)); + YYCHK1 (yyglrReduce (&yystack, 0, yyrule, yytrue]b4_user_args[)); } else { @@ -1919,8 +2133,7 @@ b4_syncline([@oline@], [@ofile@])])dnl if (yytoken != YYEOF) yytoken = YYEMPTY; yyposn += 1; - yyglrShift (&yystack, 0, yyaction, yyposn, - yylval, yyllocp]b4_user_args[); + yyglrShift (&yystack, 0, yyaction, yyposn, yylval, yyllocp); if (0 < yystack.yyerrState) yystack.yyerrState -= 1; } @@ -1931,17 +2144,17 @@ b4_syncline([@oline@], [@ofile@])])dnl goto yyuser_error; } else - YYCHK1 (yyglrReduce (&yystack, 0, -yyaction, yytrue]b4_lpure_args[)); + YYCHK1 (yyglrReduce (&yystack, 0, -yyaction, yytrue]b4_user_args[)); } } while (yytrue) { - int yys; - int yyn = yystack.yytops.yysize; + size_t yys; + size_t yyn = yystack.yytops.yysize; for (yys = 0; yys < yyn; yys += 1) YYCHK1 (yyprocessOneStack (&yystack, yys, yyposn, - yylvalp, yyllocp]b4_user_args[)); + yylvalp, yyllocp]b4_lpure_args[)); yytoken = YYEMPTY; yyposn += 1; yyremoveDeletes (&yystack); @@ -1949,7 +2162,7 @@ b4_syncline([@oline@], [@ofile@])])dnl { yyundeleteLastStack (&yystack); if (yystack.yytops.yysize == 0) - yyFail (&yystack][]b4_lpure_args[, "syntax error"); + yyFail (&yystack][]b4_lpure_args[, YY_("syntax error")); YYCHK1 (yyresolveStack (&yystack]b4_user_args[)); YYDPRINTF ((stderr, "Returning to deterministic operation.\n")); ]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = *yyllocp;]])[ @@ -1969,20 +2182,52 @@ b4_syncline([@oline@], [@ofile@])])dnl yyrecoverSyntaxError (&yystack, yylvalp, yyllocp]b4_user_args[); yyposn = yystack.yytops.yystates[0]->yyposn; } - yyDone: - /* On YYABORT, free the lookahead. */ - if (yystack.yyerrflag == 1 && yytoken != YYEMPTY) - yydestruct ("Error: discarding lookahead", + + yyacceptlab: + yyresult = 0; + goto yyreturn; + + yyabortlab: + yyresult = 1; + goto yyreturn; + + yyexhaustedlab: + yyerror (]b4_lyyerror_args[YY_("memory exhausted")); + yyresult = 2; + /* Fall through. */ + + yyreturn: + if (yytoken != YYEOF && yytoken != YYEMPTY) + yydestruct ("Cleanup: discarding lookahead", yytoken, yylvalp]b4_location_if([, yyllocp])[); - yyfreeGLRStack (&yystack); - return yystack.yyerrflag; + /* If the stack is well-formed, pop the stack until it is empty, + destroying its entries as we go. But free the stack regardless + of whether it is well-formed. */ + if (yystack.yyitems) + { + yyGLRState** yystates = yystack.yytops.yystates; + if (yystates) + while (yystates[0]) + { + yyGLRState *yys = yystates[0]; +]b4_location_if([[ yystack.yyerror_range[1].yystate.yyloc = yys->yyloc;]] +)[ yydestroyGLRState ("Cleanup: popping", yys); + yystates[0] = yys->yypred; + yystack.yynextFree -= 1; + yystack.yyspaceLeft += 1; + } + yyfreeGLRStack (&yystack); + } + + return yyresult; } /* DEBUGGING ONLY */ #ifdef YYDEBUG -static void yypstack (yyGLRStack* yystack, int yyk) ATTRIBUTE_UNUSED; -static void yypdumpstack (yyGLRStack* yystack) ATTRIBUTE_UNUSED; +static void yypstack (yyGLRStack* yystack, size_t yyk) + __attribute__ ((__unused__)); +static void yypdumpstack (yyGLRStack* yystack) __attribute__ ((__unused__)); static void yy_yypstack (yyGLRState* yys) @@ -2006,7 +2251,7 @@ yypstates (yyGLRState* yyst) } static void -yypstack (yyGLRStack* yystack, int yyk) +yypstack (yyGLRStack* yystack, size_t yyk) { yypstates (yystack->yytops.yystates[yyk]); } @@ -2054,7 +2299,8 @@ yypdumpstack (yyGLRStack* yystack) b4_epilogue m4_if(b4_defines_flag, 0, [], [@output @output_header_name@ -b4_copyright([Skeleton parser for GLR parsing with Bison], [2002, 2003, 2004]) +b4_copyright([Skeleton parser for GLR parsing with Bison], + [2002, 2003, 2004, 2005]) b4_token_defines(b4_tokens)